초록 ▼

A method for controlling an electric power flow between a high-voltage battery and an electrically-powered torque machine of a powertrain system includes, upon violating a constraint associated with the electric power flow during operation of the powertrain system, executing a battery power control

A method for controlling an electric power flow between a high-voltage battery and an electrically-powered torque machine of a powertrain system includes, upon violating a constraint associated with the electric power flow during operation of the powertrain system, executing a battery power control scheme for controlling the electric power flow including commanding an initial state for a parameter of the electric power flow, the initial state for the parameter of the electric power flow including a maximum estimated state for the parameter of the electric power flow occurring during one of a plurality of selected ones of previous timesteps.

대표청구항 ▼

1. Method for controlling a high-voltage battery and an electrically-powered torque machine of a powertrain system, comprising: sensing occurrence of a violation of a constraint associated with electric power flow between the high-voltage battery and the torque machine during operation of the powert

1. Method for controlling a high-voltage battery and an electrically-powered torque machine of a powertrain system, comprising: sensing occurrence of a violation of a constraint associated with electric power flow between the high-voltage battery and the torque machine during operation of the powertrain system; andoperating a controller to execute a closed-loop battery power control scheme for controlling the electric power flow between the high-voltage battery and the electrically-powered torque machine including commanding an initial state for a parameter of the electric power flow as an element of the closed-loop battery power control scheme, the initial state for the parameter of the electric power flow comprising a maximum estimated state for the parameter of the electric power flow occurring during one of a plurality of selected ones of timesteps previous to violating said constraint. 2. The method of claim 1, wherein said selected ones of the previous timesteps correspond to latencies between a commanded torque output from the torque machine and a corresponding change in the electric power flow from the high-voltage battery. 3. The method of claim 1, wherein said constraint associated with the electric power flow during operation of the powertrain system comprises a maximum current. 4. The method of claim 3, wherein said maximum current comprises a maximum discharge current. 5. The method of claim 3, wherein said maximum current comprises a maximum charge current. 6. The method of claim 1, wherein said constraint associated with the electric power flow during operation of the powertrain system comprises a maximum voltage. 7. The method of claim 1, wherein said constraint associated with the electric power flow during operation of the powertrain system comprises a minimum voltage. 8. The method of claim 1, wherein said constraint associated with the electric power flow during operation of the powertrain system comprises a maximum battery power. 9. The method of claim 1, wherein said constraint associated with the electric power flow during operation of the powertrain system comprises a minimum battery power. 10. Method for controlling a high-voltage battery and an electrically-powered torque machine of a powertrain system, comprising: estimating a respective battery power for each of a plurality of timesteps during ongoing operation;sensing occurrence of a violation of a constraint associated with the electric power flow between the high-voltage battery and the powertrain system;selecting a maximum of the estimated respective battery powers occurring during selected ones of the plurality of timesteps previous to said violation of the constraint as an initial battery power state; andoperating a controller to execute a closed-loop battery power control scheme to control the electric power flow between the high-voltage battery and the electrically-powered torque machine using the initial battery power state as an element of the closed-loop battery power control scheme. 11. The method of claim 10, wherein estimating each respective battery power comprises estimating battery power corresponding to a monitored torque output from the electrically-powered torque machine for each of the timesteps. 12. The method of claim 10, wherein the selected ones of the plurality of timesteps previous to said violation of the constraint correspond to latencies between a commanded torque output from the torque machine and a corresponding change in the electric power flow. 13. Method for controlling an electric power flow between a high-voltage battery and an electrically-powered torque machine of a powertrain system, comprising: monitoring the electric power flow between a high-voltage battery and the electric-powered torque machine;detecting a violating of a constraint in the electric power flow between the high-voltage battery and the electric-powered torque machine; andoperating a controller to execute a closed-loop battery power control scheme to control the electric power flow between the high-voltage battery and the electric-powered torque machine including commanding an initial state for the closed-loop battery power control scheme to control the electric power flow equal to a maximum estimated state for the electric power flow between the high-voltage battery and the electric-powered torque machine occurring during one of a plurality of selected ones of previous timesteps, wherein the selected ones of the previous timesteps correspond to latencies between a commanded torque output from the electric-powered torque machine and a corresponding change in the electric power flow between the high-voltage battery and the electric-powered torque machine. 14. The method of claim 13, wherein said violation comprises a violation of a current constraint. 15. The method of claim 13, wherein said violation comprises a violation of a voltage constraint. 16. The method of claim 13, wherein said violation comprises a violation of a battery power constraint.